1.2 GHz Variable Attenuators produce flat (even) loss across Cable TV
forward and reverse frequency band. The attenuators are used during amplifier
balancing to adjust amplifier signal levels as needed. The variable loss
produced (dB) is between 0 dB to 10 dB or 0 dB to 20 dB. The attenuators are
rated for operation up to 1.2 GHz. Within specific amplifier types, the
attenuators are also used as equalizers.
技术指标
|
Item |
Units |
Value |
|
|
Attenuation
Values |
dB |
0-10 |
0-20 |
|
Frequency |
MHz |
0 - 1200 |
|
|
Insertion
Loss at 5 MHz |
dB |
≤ 1.0 |
|
|
Return
Loss |
dB |
≥ 21.0 @ 0 - 204 MHz |
|
|
≥ 15.0 @ 205 - 750 MHz |
|||
|
≥ 12.0 @ 751 - 860 MHz |
|||
|
≥ 11.0 @ 861 - 1200 MHz |
|||
|
Impedance |
Ω |
75 |
|
|
Knob
Clock |
|
Red, Blue |
|
|
Box |
|
Blue, Black |
|
|
Cover |
|
Transparence, Yellow |
|
Note: Unless otherwise noted, all specifications
reflect typical performance and are referenced to 68°F (20°C). Specifications
are based upon measurements made in accordance with SCTE/ANSI standards (where
applicable), using standard frequency assignments.
Dimensions
Shaft Size | |
Shaft diameter Ф (mm) | Shaft length L (mm) |
6 | 5, 8 |
Ordering information
The Variable Attenuators are available in a wide variety of attenuator value and length. Please consult with us to determine the best choose for your application.
SJ-1B-10 dB: 1200 MHz, 10 dB, blue box, red
knob, 8 mm knob, transparence cover.
SJ-1B-20 dB: 1200 MHz, 20 dB, blue box, red
knob, 8 mm knob, transparence cover.
When you want different type you must add
label.
Example:
SJ-1B-10 dB: 1200 MHz, 10 dB, blue box, blue
knob, 5 mm knob, transparence cover
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